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Archive for July, 2011

To Find and Remove Files that has updated x days ago

Thursday, July 28th, 2011

Where X is the number of days

find . -mtime +X -exec ls -l {} \;

to remove these files

find . -mtime +X -exec rm -f {} \;

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Splitting a Large Mailbox into multiple files

Wednesday, July 20th, 2011

By using formail – we can split a large mailbox into multiple small one easily.

+skip
Skip the first skip messages while splitting.

-total
Output at most total messages while splitting.

The following command will output the first 10 messages into mailbox.1 and the next 10 messages to the mailbox.2, etc etc.

cat mailbox | formail -10 -s > mailbox.1
cat mailbox | formail +10 -10 -s >mailbox.2
cat mailbox | formail +20 -10 -s >mailbox.3

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Extending a Logical Volume

Sunday, July 17th, 2011

There are two steps to extend a logical volume.

1. To Extend the logical volume

lvextend -L+1G /dev/VolGroup00/LogVol06

2. To Expand the File System

resize2fs /dev/VolGroup00/LogVol06

To Display how much un-assigned Volume Group

vgdisplay

— Volume group —
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 9
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 7
Open LV 7
Max PV 0
Cur PV 1
Act PV 1
VG Size 232.50 GB
PE Size 32.00 MB
Total PE 7440
Alloc PE / Size 3934 / 122.94 GB
Free PE / Size 3506 / 109.56 GB
VG UUID lXSKxs-552n-VZ03-NsYv-c3qV-FZ3W-ONeIGD